Controlled Zn-Mediated Grafting of Thin Layers of Bipodal Diazonium Salt on Gold and Carbon Substrates
2014 (English)In: Chemistry - A European Journal, ISSN 0947-6539, E-ISSN 1521-3765Article in journal (Refereed) Published
A controlled, rapid, and potentiostat-free method has been developed for grafting the diazonium salt (3,5-bis(4-diazophenoxy)benzoic acid tetrafluoroborate (DCOOH)) on gold and carbon substrates, based on a Zn-mediated chemical dediazonation. The highly stable thin layer organic platforms obtained were characterized by cyclic voltammetry, AFM, impedance, XP, and Raman spectroscopies. A dediazonation mechanism based on radical formation is proposed. Finally, DCOOH was proved as a linker to an aminated electroactive probe.
Place, publisher, year, edition, pages
Wiley-VCH Verlagsgesellschaft, 2014.
carbon; diazo compounds; gold; reduction; surface chemistry; zinc
IdentifiersURN: urn:nbn:se:liu:diva-112550DOI: 10.1002/chem.201405121ISI: 000347231300022PubMedID: 25377261OAI: oai:DiVA.org:liu-112550DiVA: diva2:767547
N.G. and M.O. acknowledge funding from the VINNOVA VINN Excellence Center on Functional Nanoscale Materials (FunMat), the Swedish Research Council and the Swedish Foundation of Strategic Research (SSF). L.H., I.P. and J.E.G. were supported by a Swedish Government Strategic Research Area Faculty Grant in Materials Science (SFO-Mat-LiU). The Uppsala University is acknowledged for access to the Tandem Laboratory for ERDA-analysis. Part of the STEM studies was carried out in the Frederick Seitz Materials Research Laboratory Central Facilities, University of Illinois, and FEI Company, Eindhoven. We are also thankful to Dr. Brandon Howe and Dr. Ude Hangen for carrying out nanoindentation tests at the European Applications Lab at Hysitron, Inc. We thank Jianguo Wen for help in TEM and Ku Nai-Yuan for assistance with the deposition process.2014-12-012014-12-012015-11-25